Product description Metric Stainless Steel Nylon-Insert Flange Locknuts Made from 316 stainless steel, these flange locknuts have good chemical resistance and may be mildly magnetic. A nylon insert firmly grips threads to resist loosening and a flange distributes the load over a large area. They鈥檙e reusable, but their holding power lessens with each use. Height includes the flange. Metric 316 stainless steel is also known as A4 stainless steel. Product detail Drive styleExternal hex Nut typeLocknut,hex flange Lock typeSerrations,nylon insert Thread TypeMetric Thread DirectionRight Hand Thread spacingCoarse Thread FitClass 6H Grade/ClassGrade A4-80 Material316 Stainless steel FinishPassivated StandardDIN6926 Product drawing Quality control process Production workshop Packing and shipping Flange Nuts in stock website:http://www.xgfhardware.com/nuts/flange-nuts/